Smelting- furnace



No. 623,762. Patented Apr. 25, i899. c. BISHOP.

SMELTINGl FURNACE.

(Application fded Sept. 7, 1898.)

W/ TNE SSE S (No Model.)

No. 623,762. Patented Apr. 2'5,I |899. c. BlsHoP.

SMELTING FURNACE.

(Application led Sept. 7, 1898.) (No Model.) 2 shears-sheet 2.

/N VENTH W/TNESSES mu Nonms Farms on., rnoraumo, WASHINGTON, b. c,

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rares l Arent sMELjriNe- FU RNACE.l

SPECIFICATION forming part of Letters Patent No. 623,762, dated April 25, 1899. Application filed September '7, 1898.* Serial No. 690,394. (No model.)

To @ZZ whom it may concern:

Beit known that I, CHARLES BISHOP, of Knoxville, in the county of Napa and State of California, have invented new and useful Improvements in Smelting-Furnaces, of which the following is a full, clear, and exact description.

The object of the invention is to provide a smelting-furnace of a simple, durable, and economic construction and to provide for a concentration of the heat above the arch or other support upon which the ore is to be placed for smelting.

A further object of the invention is to provide for an automatic distribution of the slag and bullion and also to provide a means whereby the vapors from the ore will be condensed in the offtake-flue, means being also provided for receiving any metal that may result from such condensation and of removing the metal from the flue. Y

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding part-s in all the figures.

Figure 1 is a longitudinal vertical section through the furnace, taken substantially on the line 1 1 of Fig. 2. Fig. 2 is a vertical section through the furnace, taken at right angles to the section shown in Fig. 1 and practically on. the line 2 2 of Fig. 1. Fig. 3 is a horizontal section taken on the line 3 3 of Fig. 1. Fig. 4 is a similar section on the line 4 4 of Fig. 1; and Fig. 5 is a transverse section through that portion of the flue in which the condenser is located, the section being taken practically on the line 5 5 of Fig. 1.

A represents a furnace which may be constructed of any desired material, but which is preferably lined with lire-brick. The furnace is provided with the usual central chamber and with a base B, in which base the settling-pot 10 is located, the said settling-pot being provided with a bullion-outlet 11 at its bottom, connecting with a bullion-pot 12,10- cated in a recess 13, made in one outer side surface ofthe furnace, as shown in Fig. 2.

two openings 14 and 15, each opening being normally closed by a stopper 16. The settling-pot is further provided near the top, at the side opposite that at which the bullionoutlet 11 is located, with a slag-outlet 17, the

said slag-outlet being in communication with a spout or trough 1S, which passes out through the outer side face of the furnace and preferably through a recess 19, made in the said outer side face, as is also shown in Fig. 2.

As above stated, the bullion-pot is at one side of the furnace and the slag-outlet at the opposite side of the furnace, and in the two other opposing sides of the furnace arches 20 are constructed, adapted to receive fuel, each arch being provided with a grate 2l of any suitable construction. The fire-pot of each archis preferably provided with a door 23, and the ash-pit section of each arch with a door 22, as is best shown in Fig. 41.

The ore to be smelted is placed upon an arch C, which arch is provided with a flangebase c, the flange of the base being made to rest upon the upper edges of the settling-pot 10. The arch extends from one side of the furnace containing the lire-pot to the other, the arch being open at its ends, and the said arch is provided with any desired number of apertures 24, whereby the products of combustion from the iire-pots which are directed into the arch may pass out through the said apertures 24. The flanged portion of the arch is provided at each side of said arch with an opening 25 in the bottom, as shown in Figs. 1 and 2, and these openings 25 are in direct communication with iiues 26, produced in opposing inner side walls of the interior chamber of the furnace, as shown in Fig. 2. -The outer wall of each flue 26 is unbroken or without apertures, as is likewise the top; but the inner face 27 of each flue 2G is provided with anumber of apertures 2T. In the upper edge of the arch, at each of its en'ds, an opening 28 is made, and these openings 28 are in communication with flues 29, formed in opposite side walls of the chamber of the furnace, and the said iiues 29 are of less length than the flucs 26, the inner faces 30 of the flues 2) being provided with apertures 30. It is evident that in the construction of the flues 29 This bullion-pot is preferably provided with IOO the inner walls or faces 30 may be provided with a greater or less number of outlets or openings of greateror less area, since the said inner walls are usually constructed of firebriclr; but it will be readily understood that the said inner wall may consist of a metal plate in which the openings 30 may be of any required size.

The products of combustion after passing through the fire-pot are received within the arch and pass from the arch into the ilues 26 and 29 and out through the apertures in the said lues over the arch, as indicated by the arrows in Fig. l. The ore-receiving chamber of the furnace is provided with a top or cover 3l, which is removed when the furnace is to be filled, and the ore placed in the furnace will rest upon the arch C and against the apertured portions of the iiues 26 and 29, as shown in Fig. 2.

In the exit or offtake flue D, connected with the upper portion of the ore-receiving chamber of the furnace, one or more condensers are located, the said condenser consisting of vertically and horizontally disposed coils of pipe 32, having an inlet 33 for water and an outlet 34, and between the vertical coils 32 and below the horizontal coils of a condenser the oiftake-tlue D is provided with a cavity or pocket 35, which serves as a settling-box and receives the metal delivered from the fumes or products that would otherwise pass out through the said flue D, and the said pocket 35 maybe termed a settlingbox.

The material is drawn off from the settlingbox 35 through an opening 36, made in the flue and normally closed by a gate or door 37, as shown in Figs. 1 and 5.

rlhe furnace is exceedingly simple, is effective in operation, and is economic in construction, as well as economic in operation. The lire will have the best possible influence upon the orc, and the greatest possible amount of metal will be obtained by the smelting of the orc.

Having thus described my invention, I claim as new and desire to secure by Letters Patent l. A smelting-furnacc, provided with lireboxes, an orc-supporting arch between the fire-boxes and into which thc said fire-boxes open, and side fl ues having their lower ends leading through the arch and provided with perforations in their innei` walls, substantially as described.

2. A smelting-furnace, provided with fireboxcs, a perforated arch for supporting the ore, arranged between the ire-boxes and into which the said fire-boxes open, apertured flues in opposing sides of the central chamber and having their lower ends leading through the loweigsides of the arch, and apertured lues in the other two opposing sides of the said chamber and leading through the upper portion of the arch at the ends thereof, substantially as described.

3. A smelting furnace, comprising reboxes, a settling-pot in the central chamber, provided with bullion and slag oiftakes, an apertured ore-supporting arch above the set- Jcling-pot and into which the fire-boxes open, apertured ues in opposing sides of the central chamber and leading through the sides of the arch, and apertured flues in the other two opposing sides of the said chamber and leading through the top of the arch at the ends thereof, substantially as described.

4. A smelting-furnace, comprising a central chamber, fire-boxes on opposite sides of the chamber and opening into the same, a settling-pot in the bottom of the chamber and provided with a slag-offtake at its upper portion and with a bullion-offtake at the bottom, a bullion-pot into which leads the said offtake, a perforated arch above the settling-pot for supporting the ore, and apertured lues,

two of said lues leading through the sides of the arch at the bottom and the other two through lthe top at the ends, substantially as described.

5. A smelting-furnace, comprising a central chamber, an exit-flue provided with a settling-box, a condenser in the said ue, lireboxes opening into the central chamber, a settling-pot in the bottom of the central chainber and provided with a slag and a bullionoltake, a bullion-pot into which the bullionoiftake leads, an apertured arch above the settling-pot, and apertured lines, two of which lead through the sides of the arch at the bottom and the other two through the top at the ends, substantially as described.

CHARLES' BISHOP.

Vitliesses:

CI-IARLEs lIAsKINs, THOMAS VAYNE.

IOO 

